Electrolytes

Q.

Which one of the following is a nonelectrolyte?

1. NaCl
2. glucose
3. HCOONa
4. ammonium chloride

Q. Which of the following is non-electrolyte?

1. $C_{12}{H}_{22}{O}_{11}$
2. $C{H}_{3}COOH$
3. $NaCl$
4. $CaC{l}_2$

Q. Which of the following is not a strong electrolyte ?

1. Fused NaCl
2. Dilute perchloric acid
3. Acetic acid
4. Aqueous NaOH solution

Q.

Which of the following compounds in their aqueous or molten state are correctly categorized below:

1. Strong electrolyte:- $NaCl$

   Weak electrolyte:- $C{H}_{3}COOH$

2. Strong electrolyte:- $C{H}_{3}COOH$

   Weak electrolyte:- $HCl$

3. Strong electrolyte:- $N{H}_{4}OH$

   Weak electrolyte:- $HCl$

4. Strong electrolyte:- $NaCl$

   Weak electrolyte:- $N{H}_{4}OH$

Q. Define ionic equilibrium.

Q. Which of the following is a poor electrolyte?

1. A hydrochloric acid solution
2. A vinegar solution
3. A sodium chloride solution
4. A sodium hydroxide solution
5. Molten sodium chloride

Q. If ${pK}_b$ for fluoride ion at 25 is 10.83, the ionisation constant of hydrofluoric acid in water at this temperature is :

1. $1.74\times {10}^{-5}$
2. $3.52\times {10}^{-3}$
3. $5.38\times {10}^{-2}$
4. $6.75\times {10}^{-4}$

Q. Which of the following will exhibit maximum ionic conductivity?

1. $K_4\left[Fe\right(CN{)}_6]$
2. $\left[Cu\right(N{H}_3{)}_4]C{l}_2$
3. $\left[Co\right(N{H}_3{)}_6]C{l}_3$
4. $\left[Ni\right(CO{)}_4]$

Q. Which solution has the greatest percent ionization?

1. $0.10$M $N{H}_3$($K_b=1.8\times {10}^{-5}$)
2. $0.25$M $HN{O}_2$ ($K_1=4.5\times {10}^{-4}$)
3. $1.000$M HCOOH ($K_a=1.7\times {10}^{-4}$)
4. $2.000$M $C{H}_{3}N{H}_2$ ($K_b=4.4\times {10}^{-4}$)

Q. Which of the followings are dissociation?
1. $MgC{l}_2\to M{g}^{2+}+2C{l}^{-}$
2. $PbB{r}_2\to P{b}^{2+}+2B{r}^{-}$
3. $NaCl\to N{a}^{+}+C{l}^{-}$

1. 1 and 2
2. 1 and 3
3. 2 and 3
4. 1, 2 and 3